Home / 21,396.65-32,081.30-10,281.22

Finding the Fourth Proportional to 21,396.65, 32,081.30 and 10,281.22

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Solution

The fourth proportional to 21,396.65, 32,081.30 and 10,281.22 is: 15,415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.65 : 32,081.30 = 10,281.22 : x
  2. Step 2: Convert to fraction form
    21,396.65/32,081.30 = 10,281.22/x
  3. Step 3: Cross multiply
    21,396.65x = 32,081.30 × 10,281.22
  4. Step 4: Simplify right side
    21,396.65x = 329,834,771.58
  5. Step 5: Solve for x
    x = 329,834,771.58/21,396.65
  6. Step 6: Final answer
    x = 15,415.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.